Buick 14090022 Cover,Engine Front

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Disconnect the negative battery cable from the battery. On models equipped with the Delco Loc II audio system, make sure the lockout feature is turned off before performing any procedure that requires disconnecting the battery. Loosen the water pump pulley bolts, then remove the serpentine drivebelt. Remove the water pump pulley. Remove the vibration damper. Unbolt the drivebelt tensioner and idler, if equipped. Drain the coolant and engine oil. Remove the alternator and loosen the mounting bracket. Unbolt the power steering pump (if equipped) and tie it aside. Leave the hoses connected. Unbolt the flywheel/driveplate cover below the transaxle. Remove the starter. Remove the oil pan. Disconnect the coolant hoses from the fill pipe and water pump. Unbolt the spark plug wire shield at the water pump. Disconnect the canister purge hose and tie it aside. Remove the Timing Cover-to-engine block bolts. Note that some of the bolts require T-40 or T-50 Torx bits for removal. Separate the cover from the engine. If it is stuck, tap it with a soft-face hammer, but do not try to pry it off. Use a gasket scraper to remove all traces of old gasket material and sealant from the cover and engine block. The cover is made of aluminum, so be careful not to nick or gouge it. Clean the gasket sealing surfaces with lacquer thinner or acetone. Apply a thin layer of sealant to the lower corners on both sides of the new gasket, then position the gasket on the engine block (the dowel pins should keep it in place). Attach the cover to the engine and install the bolts. Apply sealant to the bottom of the gasket. Follow a criss-cross pattern when tightening the fasteners and work up. The remainder of the installation is the reverse of removal. Add oil and coolant, start the engine, and check for leaks.

To remove the engine, first disconnect the negative battery cable and drain the cooling system, disconnecting the radiator hoses, heater hose, and small by-pass hose for Olds engines. Next, remove the top radiator support, fan shroud, and radiator, followed by all belts, the fan and fan pulley, crankshaft drive pulley, and torsional damper. If a Chevrolet engine is present, remove the water pump. Then, take out all bolts securing the front cover to the engine block and remove the front cover, noting that on Oldsmobile engines, the water pump will come off with the cover. For installation on Oldsmobile engines, use vise grip pliers to remove dowel pins from the engine block, grinding a chamfer on each pin's end. Cut off excess gasket material at the front of the oil pan until flush with the engine block, and use a gasket scraper to remove all excess from the mating surfaces. Trim about ¼ inch from each end of the new front pan seal, install a new gasket to the engine block and a new front seal on the cover with sealant, then tilt the cover into place, compressing the lower pan seal while guiding it into the cavity. Apply engine oil to bolt threads and loosely install two bolts to hold the cover, then install the dowel pins with the chamfered end first, followed by the water pump with a new gasket. Tighten all bolts to the proper torque specifications and reinstall all components in reverse order, applying lubricant to the front hub seal before installing the crankshaft hub. For Chevrolet engines, ensure all gasket surfaces are clean, trim any protruding gasket material at the front of the oil pan, and apply a ¼-inch bead of silicone sealer at the joint between the oil pan and engine block. Coat the cover gasket with a non-setting sealant, position it on the cover, and loosely install it, starting with the top four bolts and then the lower screws. Apply sealer on the bottom of the cover, install it, and tighten the screws alternately while aligning the dowel pins. Remove the lower screws and install the remaining cover bolts, torquing them to specifications, then install the water pump with new gaskets and follow the removal steps in reverse for the remaining components.

The oil pan should be installed to complete the installation. The removal procedure should be reversed.

During installation, ensure proper alignment of the crankshaft sprocket with the Woodruff key and the balance shaft gears.

Temporarily install the crankshaft pulley hub and bolt, align the timing marks on the crankshaft and camshaft sprockets, push back the timing chain tensioner and insert a pin to retain it, use a prybar to hold the engine while removing the camshaft bolt, and carefully pry off the camshaft sprocket.

The number four piston should be at top dead center (TDC) on the compression stroke before proceeding with timing chain cover removal.

Lubricate the harmonic balancer shaft where it will pass through the timing chain cover seal to prevent damage upon engine start.

Install the timing chain cover using a new rubber seal.